EP 0574191 A1 19931215 - Production of high viscosity index lubricants.
Title (en)
Production of high viscosity index lubricants.
Title (de)
Produktion von Schmiermitteln mit hohem Viskositätsindex.
Title (fr)
Production de lubrifiants à haut indice de viscosité.
Publication
Application
Priority
US 89506692 A 19920608
Abstract (en)
This invention relates to the production of high viscosity index lubricants from mineral oil feedstocks, e.g., petroleum waxes, by hydrocracking in a first stage, followed by a combined hydroisomerization-hydrotreating process in a second stage, wherein the temperature in the second stage is closely controlled by regulating the amount of nitrogen-containing compounds which are permitted into the second stage.
IPC 1-7
IPC 8 full level
C10G 45/64 (2006.01); B01J 29/74 (2006.01); C10G 45/72 (2006.01); C10G 49/12 (2006.01); C10G 65/12 (2006.01)
CPC (source: EP US)
C10G 45/72 (2013.01 - EP US); C10G 2400/10 (2013.01 - EP US)
Citation (search report)
- [A] US 5100535 A 19920331 - CHEN NAI YUEN [US], et al
- [A] DE 2622426 A1 19761209 - BASF AG
- [A] US 4994168 A 19910219 - HARANDI MOHSEN N [US]
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0574191 A1 19931215; EP 0574191 B1 19970625; AU 3983393 A 19931209; AU 656267 B2 19950127; CA 2096993 A1 19931209; DE 69311765 D1 19970731; DE 69311765 T2 19971106; ES 2103432 T3 19970916; JP H0665583 A 19940308; SG 42945 A1 19971017; US 5275719 A 19940104
DOCDB simple family (application)
EP 93304344 A 19930604; AU 3983393 A 19930526; CA 2096993 A 19930526; DE 69311765 T 19930604; ES 93304344 T 19930604; JP 13574193 A 19930607; SG 1996001230 A 19930604; US 89506692 A 19920608